GMC Sierra 1500 trim comparison
2024 GMC Sierra 1500 AT4 vs AT4X
The Sierra 1500 AT4 starts at $66,100 while the AT4X is $79,200. That $13,100 gap buys 3 meaningful differences.
$13,100 more is ~$231/month. The question is whether the added equipment will matter to you every week.
The AT4 is the cleaner stopping point if keeping roughly $231/month in your budget matters. The AT4X earns the extra money only if you want the nicer equipment factory-installed and under warranty.
Think about this as a monthly tradeoff, not just a sticker gap. The AT4X adds about $231/month on a typical 60-month loan, or around $13,860 more overall with interest.
Lock one trim, change the other side, and move through exact pair pages without resetting back to the full lineup every time.
Who notices the difference
The higher trim starts to make more sense when you want the nicer equipment factory-installed and under warranty.
When both feel the same
The AT4 and AT4X are mechanically identical where it counts: the same 10-speed shiftable automatic transmission and Crew Cab cabin and bed dimensions.
The upgrade math
You are paying $13,100 for 2 measurable differences, which works out to about $6,550 per change.
Key Differences at a Glance
This is the fast read: price, power, efficiency, and the feature flips most likely to change the answer.
Every Difference, Side by Side
This is the full read behind the quick decision signals above: the complete hardware, comfort, and equipment story. 3 specification differences, 4 shared.
Full Specification Comparison
Specifications reflect available data as of early 2024. Confirm details with an authorized dealer before purchasing.
| Spec | AT4 | AT4X |
|---|---|---|
| Pricing | ||
| MSRP | $66,100 | $79,200 |
| Powertrain | ||
| Engine | 3.0L I6 diesel Turbo | 3.0L I6 diesel Turbo |
| Horsepower | 305 hp | 305 hp |
| Torque | 495 lb-ft | 495 lb-ft |
| Transmission | 10-speed shiftable automatic | 10-speed shiftable automatic |
| Drivetrain | 4WD | 4WD |
| Fuel Economy | ||
| City MPG | 21 | 19 |
| Highway MPG | 23 | 20 |
| Combined MPG | 22 | 19 |
| Fuel Tank | 24.0 gal | 24.0 gal |
| Dimensions | ||
| Curb Weight | 5,500 lbs | 5,890 lbs |
| Wheelbase | 148.0" | 148.0" |
| Length | 232.9" | 232.9" |
| Width | 81.2" | 81.2" |
| Height | 78.4" | 78.7" |
| Truck Specs | ||
| Cab Type | Crew Cab | Crew Cab |
| Bed Length | 5.8 ft | 5.8 ft |
| Safety | ||
| NHTSA Overall | 5/5 stars | 5/5 stars |
| Warranty | ||
| Bumper-to-Bumper | 3yr/36k | 3yr/36k |
| Powertrain | 5yr/60k | 5yr/60k |
| Corrosion | 6yr/100k | 6yr/100k |
| Roadside Assistance | 5yr/60k | 5yr/60k |
Data sources: licensed third-party automotive data, EPA fueleconomy.gov, NHTSA, and official manufacturer materials. Values marked est. are estimated.
2024 GMC Sierra 1500 AT4 vs AT4X Questions Shoppers Ask
Use this page for the direct trim answer, then zoom back out to the GMC Sierra 1500 lineup, the GMC brand hub, the Full-Size Trucks, the how to pick a trim guide, or our mid-trim value research when you need the bigger shopping path behind this one matchup.
How much more does the 2024 Sierra 1500 AT4X cost than the AT4?
The AT4X starts at $79,200 compared to $66,100 for the AT4 (both Crew Cab 4WD). That is a $13,100 difference, or approximately $231/month more on a 60-month loan.
Do the 2024 GMC Sierra 1500 AT4 and AT4X have the same engine?
Yes. Both use the 3.0L I6 diesel Turbo producing 305 hp and 495 lb-ft of torque. The engine hardware does not change between these trims, so the real differences are in equipment and feature content.
Do the 2024 Sierra 1500 AT4 and AT4X have the same drivetrain?
Yes. Both come with 4WD as standard. The differences between these trims are in features and equipment, not drivetrain.
Is the 2024 Sierra 1500 AT4 or AT4X safer?
Both share the same GMC Sierra 1500 platform with an overall 5-star NHTSA safety rating. Safety ratings are model-level and identical across trims. The trim choice affects comfort and features, not crash protection.
What warranty does the 2024 GMC Sierra 1500 come with?
All 2024 GMC Sierra 1500 trims, including both the AT4 and AT4X, come with GMC's standard warranty: 3yr/36k bumper-to-bumper and 5yr/60k powertrain coverage. Warranty does not vary by trim level.
Which 2024 GMC Sierra 1500 trim gets better fuel economy, the AT4 or the AT4X?
The AT4 is the more efficient of the two at 22 combined MPG, versus 19 for the other trim. That matters most if you are balancing running costs against the extra power, drivetrain, or comfort equipment tied to the pricier trim.
The Full Story Behind This Price Gap
Use the direct answer above for this exact matchup, then use these guides to understand whether you are really looking at a feature step-up, a package shuffle, or the point where the lineup starts changing in a meaningful way.
Breaking Down the $13,100 Gap
At $13,100 more, the Sierra 1500 AT4X adds minor equipment changes. This is a situational call. If those features are on your must-have list, the upgrade makes sense. If not, the AT4 delivers the same core Sierra 1500 experience for less.
Fuel Economy Comparison
The Sierra 1500 AT4 gets 3 more combined MPG. At $3.50/gallon and 12,000 miles/year, that saves roughly $302 per year or $1,510 over five years of ownership.
What Both Trims Share
The Sierra 1500 AT4 and AT4X share the same engine, drivetrain, and transmission. The $13,100 difference comes down to 2 feature and equipment changes, not mechanical differences.
The Short Version
The Sierra 1500 AT4X costs $13,100 more than the AT4 (about $231/month more on a 60-month loan). That buys 2 meaningful changes at $6,550 per change. Whether that trade-off is worth it depends on which features matter to your daily driving.
Trim-Matched Accessories
These add-ons are split by trim intent so the recommendations follow the actual use case, not just the same repeated product block.
GMC Sierra 1500 AT4
Value-trim add-onsThese picks fit the AT4 best when the goal is covering the daily-use gaps without paying up to the next trim.
GMC Sierra 1500 AT4X
Step-up trim add-onsThese picks suit the AT4X when you want the accessories to match the nicer cabin, broader utility, or more premium use case.
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Specifications shown combine licensed third-party automotive data with official manufacturer, EPA, and NHTSA source material for the 2024 model year. Actual pricing, features, and availability may vary by region and dealer. Always confirm details with an authorized dealer before making a purchase decision. TrimAtlas is not affiliated with GMC or any dealership.
Page updated 2026-03-18. Verify equipment, pricing, and regional availability with the manufacturer or dealer.